<template>
  <el-dialog v-model="dialogVisible" title="基础数据导入" width="70vw" style="height: 70vh;">
    <el-upload ref="uploadRef" v-model:file-list="fileList" :action="importUrl + '?updateSupport=' + updateSupport"
      :auto-upload="false" :disabled="formLoading" :headers="uploadHeaders" :limit="1" :on-error="submitFormError"
      :on-exceed="handleExceed" :on-success="submitFormSuccess" accept=".xlsx, .xls" drag>
      <Icon icon="ep:upload" />
      <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em>
      </div>
      <template #tip>
        <div class="el-upload__tip text-center">
          <span>仅允许导入 xls、xlsx 格式文件。</span>
          <el-link :underline="false" style="font-size: 12px; vertical-align: baseline" type="primary"
            @click="importTemplate">
            下载模板
          </el-link>
        </div>
      </template>
    </el-upload>
    <template #footer>
      <el-button :disabled="formLoading" type="primary" @click="submitForm">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </el-dialog>
</template>
<script lang="ts" setup>
import { getAccessToken, getTenantId } from '@/utils/auth'
import { DrawConfigApi, DrawConfig } from '@/api/business/drawconfig'
import download from '@/utils/download'
import { ElLoading } from 'element-plus'


defineOptions({ name: 'DrawConfigImport' })

const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const formLoading = ref(false) // 表单的加载中
const uploadRef = ref()
const importUrl =
  import.meta.env.VITE_API_URL + '/business/draw-config/import'
const uploadHeaders = ref() // 上传 Header 头
const fileList = ref([]) // 文件列表
const updateSupport = ref(0) // 是否更新已经存在的用户数据

/** 打开弹窗 */
const open = () => {
  dialogVisible.value = true
  updateSupport.value = 0
  fileList.value = []
  resetForm()
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗


// 在 setup 内部顶部定义 loading 变量（注意不要用 ref，因为 ElLoading 返回的是对象）
let loadingInstance: ReturnType<typeof ElLoading.service> | null = null

/** 提交表单 */
const submitForm = async () => {
  if (fileList.value.length == 0) {
    message.error('请上传文件')
    return
  }

  loadingInstance = ElLoading.service({
    lock: true,
    text: 'Loading',
    background: 'rgba(0, 0, 0, 0.7)',
  })

  // 提交请求
  uploadHeaders.value = {
    Authorization: 'Bearer ' + getAccessToken(),
    'tenant-id': getTenantId()
  }
  formLoading.value = true
  uploadRef.value!.submit()
}

/** 文件上传成功 */
const emits = defineEmits(['success'])
const submitFormSuccess = (response: any) => {
  // 关闭 loading
  loadingInstance?.close()
  loadingInstance = null

  if (response.code !== 0) {
    message.error(response.msg)
    formLoading.value = false
    return
  }
  // 拼接提示语
  const data = response.data
  let text = '上传成功数量：' + data.insertNameList.length + ';'
  for (let username of data.insertNameList) {
    text += '< ' + username + ' >'
  }
  text += '更新成功数量：' + data.updateNameList.length + ';'
  for (const username of data.updateNameList) {
    text += '< ' + username + ' >'
  }
  text += '更新失败数量：' + Object.keys(data.failureMap).length + ';'
  for (const username in data.failureMap) {
    text += '< ' + username + ': ' + data.failureMap[username] + ' >'
  }
  message.alert(text)
  formLoading.value = false
  dialogVisible.value = false
  // 发送操作成功的事件
  emits('success')
}

/** 上传错误提示 */
const submitFormError = (): void => {
  message.error('上传失败，请您重新上传！')
  // 关闭 loading
  loadingInstance?.close()
  loadingInstance = null
  formLoading.value = false
}

/** 重置表单 */
const resetForm = async (): Promise<void> => {
  // 重置上传状态和文件
  formLoading.value = false
  await nextTick()
  uploadRef.value?.clearFiles()
}

/** 文件数超出提示 */
const handleExceed = (): void => {
  message.error('最多只能上传一个文件！')
}

/** 下载模板操作 */
const importTemplate = async () => {
  const res = await DrawConfigApi.importTemplate()
  download.excel(res, '基础信息导入模版.xlsx')
}


</script>
